Triangular pipe truss assembling jig frame

The utility model relates to a triangular pipe truss assembling jig frame. An existing triangular pipe truss assembling jig frame is inconvenient and nonstandard to assemble. Therefore, the triangularpipe truss assembling jig frame is provided; left and right high upright posts which are fixed and left and right low upright posts which can move horizontally are arranged on left and right frames of the square frame type base; l-shaped adjustable brackets with adjustable heights are additionally arranged on the left and right high upright posts and the left and right low upright posts respectively; a short upright post is welded on each of the left frame and the right frame; the short upright posts are respectively close to the left high upright post and the right high upright post; and a left front upper clamping part, a right front upper clamping part, a left rear upper clamping part and a right rear upper clamping part are respectively formed between the inner side wing plates of theleft and right low uprigh